package com.itcast.bos.web.action;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;










import com.itcast.bos.domain.Courier;
import com.itcast.bos.domain.Standard;
import com.itcast.bos.service.CourierService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
@ParentPackage("json-default")
@Namespace("/")
@Controller
@Scope("prototype")
public class CourierAction extends ActionSupport implements ModelDriven<Courier>{
	
	private Courier courier=new Courier();
	@Override
	public Courier getModel() {
		// TODO Auto-generated method stub
		return courier;
	}
	@Autowired
	private CourierService courierService;
	@Action(value="courier_save",results={@Result(name="success",type="redirect",location="./pages/base/courier.html")})
	public String save(){
		courierService.save(courier);
		return SUCCESS;
	}
	@Action(value="courier_pageQuery",results={@Result(name="success",type="json")})
	public String findAll(){

		Pageable pageable=new PageRequest(page-1, rows);
	
		Specification<Courier> specification=new Specification<Courier>() {

			@Override
			public Predicate toPredicate(Root<Courier> root,
					CriteriaQuery<?> query, CriteriaBuilder cb) {
				List<Predicate> list = new ArrayList<Predicate>();

				// 简单单表查询
				if (StringUtils.isNotBlank(courier.getCourierNum())) {
					Predicate p1 = cb.equal(
							root.get("courierNum").as(String.class),
							courier.getCourierNum());
					list.add(p1);
				}
				if (StringUtils.isNotBlank(courier.getCompany())) {
					Predicate p2 = cb.like(
							root.get("company").as(String.class),
							"%" + courier.getCompany() + "%");
					list.add(p2);
				}
				if (StringUtils.isNotBlank(courier.getType())) {
					Predicate p3 = cb.equal(root.get("type").as(String.class),
							courier.getType());
					list.add(p3);
				}
				// 多表查询
				Join<Courier, Standard> standardJoin = root.join("standard",
						JoinType.INNER);
				if (courier.getStandard() != null
						&& StringUtils.isNotBlank(courier.getStandard()
								.getName())) {
					Predicate p4 = cb.like(
							standardJoin.get("name").as(String.class), "%"
									+ courier.getStandard().getName() + "%");
					list.add(p4);
				}
				return cb.and(list.toArray(new Predicate[0]));		
			}
		};
		Page<Courier> pageData= courierService.findpage(specification,pageable);
		Map<String,Object> map=new HashMap<>();
		map.put("total", pageData.getTotalElements());
		map.put("rows", pageData.getContent());
		ActionContext.getContext().getValueStack().push(map);
		return SUCCESS;
	}
	@Action(value="courier_delBatch",results={@Result(name=SUCCESS,type="redirect",location="./pages/base/courier.html")})
	public String delBatch(){
		String[] idArray=ids.split(",");
		courierService.delBatch(idArray);
		return SUCCESS;
	}
	private int page;
	private int rows;
	private String ids;
	

	public void setIds(String ids) {
		this.ids = ids;
	}
	public void setPage(int page) {
		this.page = page;
	}
	public void setRows(int rows) {
		this.rows = rows;
	}
	
	
}
